Alnus rhenana (P.WESSEL et C.O.WEBER) WINTERSCHEID et KVAČEK

Kvaček, Zlatko, Teodoridis, Vasilis & Radoň, Miroslav, 2018, Review Of The Late Oligocene Flora Of Matrý Near Sebuzín (České Středohoří Mts., The Czech Republic), Fossil Imprint 74 (3 - 4), pp. 292-316 : 298

Alnus rhenana (P.WESSEL et C.O.WEBER) WINTERSCHEID et KVAČEK

Pl. 7, Figs 7–9

1856 Corylus rhenana P.WESSEL et C.O.WEBER , p. 134, pl. 22, fig. 5.

2002 Alnus cf. rostaniana SAPORTA ; Radoň, p. 170, pl. 1, fig. 11.

2009 Alnus rostaniana SAPORTA ; Akhmetiev et al., p. 117, pl. 12, fig. 11.

2014 Alnus rhenana (P.WESSEL et C.O.WEBER) WINTERSCHEID et KVAČEK , p. 22, pl. 4, figs 1–5, pl. 11, figs 4–6.

M a t e r i a l s t u d i e d. Leaf impressions PA 1166.1, 1172.4, 1175.2, 1343, 1372, 1375, 1380, 1403, 1404, 1414, 1423.

D e s c r i p t i o n. The leaves are ovate to obovate, over 150 mm long, 50 mm wide, incompletely preserved, acute at apex, rounded to shallow cordate at base, finely widely serrate on margin.

D i s c u s s i o n. The alder foliage recovered at Matrý is for the first time compared with Alnus rhenana , which is typically long petiolate, obovate and varying in shape from broadly obovate to ovate ( Winterscheid and Kvaček 2014). A fossil species based on the leaf impression of Sorbus palaeoaria ETTINGSH. ( Ettingshausen 1869) from Žichov also belongs to Alnus rhenana . It differs in the shape of the blade from the narrow elliptic alder leaves assigned to Alnus gaudinii (HEER) ERW.KNOBLOCH et KVAČEK from Seifhennersdorf ( Walther and Kvaček 2007) and Kundratice ( Kvaček and Walther 1998). The previously used fossil taxon Alnus rostaniana SAPORTA ( Akhmetiev et al. 2009) falls into the synonymy of A. rhenana together with another alder foliage from the late Oligocene site of Manosque, France ( Saporta 1891).